html,body{height: 100%}
html { overflow-x: hidden; overflow-y: auto; }
body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
button,
textarea,
p,
blockquote,
th,
td {
    margin: 0;
    padding: 0;
}
body {
    background: #fff;
    color: #555;
    font-size: 1rem;
    font-family: "Microsoft YaHei", Arial, Helvetica, sans-serif;
}